Identification and characterization of a novel HLA-DRB1 allele, DRB1*0830*

Here, we report on the identification and characterization of a novel human leukocyte antigen (HLA) DRB1 allele, DRB1*0830. This allele was identified in a candidate for hematopoietic stem cell donation. While the DNA sequence of HLA-DRB1*0830 most closely matches to DRB1*080202, its amino acid sequence resembles DRB1*080202 and DRB1*0813. Due to a substitution at nucleotide position 286 HLA-typing using sequence-specific oligonucleotide hybridization or amplification using sequence-specific primers gave inconclusive results. Allele-specific DNA sequencing confirmed a 286 T-->A substitution resulting in Phe67Ile.